As a global financial center, Hong Kong serves as the ______ role in the course of Renminbi internationalization.
| A．unique | B．only |
| C．single | D．typical |
I ______ myself more-----it was a perfect day.
| A．shouldn’t have enjoyed | B．needn’t have enjoyed |
| C．wouldn’t have enjoyed | D．couldn’t have enjoyed |
Mary worked here as a ____ secretary and ended up getting a full-time job with the company.
| A．pessimistic | B．temporary | C．previous | D．cautious |
——Hey, can I ask you a favor?
----Sure, _______
| A．Here you are | B．Just as I thought |
| C．How is it going | D．What can I do for you? |
A model or an experiment in a science class can help us see things which wouldremain hidden．
| A．therefore | B．yet | C．otherwise | D．still |
She must have ranked her birthday presents in order of_because the top one is her favorite．
| A．value | B．time | C．interest | D．preference |